The invention relates to a security element (1) with authentication information (2) for checking the correct combination of two support parts (3, 4, 5), characterized in that the security element (1) comprises at least one first partial element (6) comprising first partial information (7) and a second partial element (8) comprising second partial information (9). The first partial element (6) can be associated with a first support part (3) and the second partial element (8) can be associated with a second support part (4), both partial elements (6, 8) can be moved from a starting position into a checking position in which both partial elements (6, 8) overlap. The first partial information (7) and the second partial information (9) represent the authentication information (2) when in the checking position.